<template>
  <el-card>
    <!--路径导航-->
    <div slot="header">
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <!--主体内容-->
    <div id="main"
         style="width: 750px; height: 400px;">
    </div>
  </el-card>
</template>

<script>
import * as echarts from 'echarts'
import _ from 'loadsh'
export default {
  data () {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  methods: {
    name () {

    }
  },
  async mounted () {
    // 初始化一个 echarts 实例对象
    var myChart = echarts.init(document.getElementById('main'))
    // 发请求
    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) {
      return this.$message.error('获取失败')
    }
    // 后台返回数据和需要合并的数据放在一起
    const result = _.merge(res.data, this.options)
    // 展示数据
    myChart.setOption(result)
  }
}
</script>

<style scope lang="less">

</style>
